Tokyo is a city of millions.
During rush-hours the crowds carry you like water that is flowing from the mountain. Crossing the crowds? direction is no option. Go with the flow? But even on the silent moments, when everybody is at work or at home, it is the absence of people that is suggesting their presence. The light, the setup of the urban scene, everything in the picture is telling that hundreds of people should be here?
Your mind is telling a story based upon the picture. The picture is only giving a part of reality. That part that can be seen. What you sense can not be photographed.